2.7.1.130 D138A point mutant of conserved residue, not directly involved in ADP or Mg2+ binding. About 0.1% of wild-type activity 723650 2.7.1.130 D138A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D138N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D139A point mutant of conserved residue, not directly involved in ADP or Mg2+ binding. About 0.1% of wild-type activity 723650 2.7.1.130 D139A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D139N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D260A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99E site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 E100A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 E100D site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 E100Q site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 E172A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 G47A about 43% of wild-type activity 723650 2.7.1.130 G48A about 1.8% of wild-type activity 723650 2.7.1.130 G50A about 0.1% of wild-type activity 723650 2.7.1.130 H143A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 H261A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 K51A about 0.1% of wild-type activity 723650 2.7.1.130 K51A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 additional information steady-state kinetic analysis of multiple point mutants of the lipid-binding pocket pinpoints critical residues involved in substrate binding, and construction of two N-terminal helix truncated forms of LpxK, one in which amino acids 2-12 are removed, DELTA12LpxK, and another in which amino acids 2-29 are removed, DELTA29LpxK 738621 2.7.1.130 N43A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 Q142A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 R119A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 R171A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 R72A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 738621 2.7.1.130 S49A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 S53A about 9.9% of wild-type activity 723650 2.7.1.130 S53A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 T52A about 0.1% of wild-type activity 723650 2.7.1.130 T52A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 Y74A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621